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April 1998 |
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| Jan. | Feb. | Mar. | Apr. | May | June | July | Aug. | Sep. | Oct. | Nov. | Dec. |
| 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 |
| Day | Moonage | Phenomenon (JST) | |
|---|---|---|---|
| 1 | Wed | 4.0 | 03:15 Mars is closest to Mercury (03o44'.8) |
| 17:08 Occultation of Aldebaran(Mag:1.1)(Tokyo) | |||
| 19:15 Lambda-Tau is at minimum brightness | |||
| 2 | Thu | 5.0 | 15:22 Saturn is closest to Mars (01o51'.3) |
| 18:59 Algol is at minimum brightness | |||
| 3 | Fri | 6.0 | RT-Sco is at maximum brightness (Mag:Period 449 days, 7.0-15.2) |
| 03:45 Delta-Lib is at minimum brightness | |||
| 13:40 Moon is at north most(Decl.:+18o36'.5) | |||
| 20:55 Mars passes 02o00'.7 north of Saturn | |||
| 4 | Sat | 7.0 | 05:18 First quarter moon |
| 5 | Sun | 8.0 | 08:45 Longitude of the sun reaches 15 degrees |
| 6 | Mon | 9.0 | R-Boo is at maximum brightness (Mag:Period 223 days,6.2-12.1) |
| 10:18 Mercury is at inferior conjunction(02o55'.2,Mag:5.2,Dia.:11".3 north of Sun) | |||
| 7 | Tue | 10.0 | 05:34 Mercury is closest to Sun (02o33'.3) |
| 8 | Wed | 11.0 | |
| 9 | Thu | 12.0 | 23:01 Moon is closest to Asteroid Juno (02o52'.1) |
| 10 | Fri | 13.0 | R-Vul is at maximum brightness (Mag:Period 137 days, 7.0-14.3) |
| 03:19 Delta-Lib is at minimum brightness | |||
| 21:22 Moon passes equator, to southern hemisphere | |||
| 11 | Sat | 14.0 | 11h Moon is farthest from the Earth (406,353km,Dia.:29'24".5) |
| 12 | Sun | 15.0 | 07:23 Full Moon |
| 13 | Mon | 16.0 | 17h Comet C/1997 G2 (Montani) passses perihelion |
| 14 | Tue | 17.0 | T-Cep is at maximum brightness (Mag:Period 388 days, 5.2-11.3) |
| 01:44 Asteroid Ceres is at conjunction | |||
| 21:38 Saturn is at conjunction(02o24'.8,Mag:0.5,Dia.:16".0, south of Sun, Ring: 36".2x8".3) | |||
| 15 | Wed | 18.0 | Vir meteor shower is at peak (Mar.10-May 15) |
| 02:38 Occultation of Gamma-Lib(Mag:4.0)(Tokyo) | |||
| 16 | Thu | 19.0 | 05:15 Moon passes 07o19'.5 south of Pluto |
| 17 | Fri | 20.0 | 02:52 Delta-Lib is at minimum brightness |
| 14:16 Longitude of the sun reaches 27 degrees | |||
| 18 | Sat | 21.0 | V-CrB is at maximum brightness (Mag:Period 357 days, 6.9-12.6) |
| 08:18 Moon is at south most(Decl.:-18o42'.9) | |||
| 19 | Sun | 22.0 | 11h Comet 62P/Tsuchinshan 1 passses perihelion(Period 6.6 years) |
| 11:10 Mercury is at apogee(R.A.:00h37m.2) | |||
| 20 | Mon | 23.0 | 04:53 Last quarter moon |
| 10:36 Moon passes 02o46'.6 north of Neptune | |||
| 15:57 Longitude of the sun reaches 30 degrees | |||
| 21 | Tue | 24.0 | R-Dra is at maximum brightness (Mag:Period 245 days, 6.7-13.2) |
| 05:19 Moon passes 03o00'.2 north of Uranus | |||
| 06h Heliocentric latitude of Saturn is most at south | |||
| 22 | Wed | 25.0 | 19h Lyr meteor shower is at peak( Apr.16-Apr.25) |
| 20:43 Algol is at minimum brightness | |||
| 23 | Thu | 26.0 | R-Aqr is at maximum brightness (Mag:Period 386 days, 5.8-12.4) |
| 08:46 Jupiter is closest to Venus (00o16'.6) | |||
| 11:17 Venus passes 00o17'.6 north of Jupiter | |||
| 16:12 Moon passes 00o13'.0 north of Jupiter(Occultation in Africa) | |||
| 16:31 Moon passes 00o04'.8 south of Venus(Occultation in Africa) | |||
| 24 | Fri | 27.0 | 02:26 Delta-Lib is at minimum brightness |
| 05:29 Saturn is closest to Asteroid Ceres (04o31'.2) | |||
| 19:50 Moon passes equator, to northern hemisphere | |||
| 25 | Sat | 28.0 | 03:56 Moon passes 00o52'.3 south of Mercury(Occultation in South America) |
| 26 | Sun | 29.0 | 02:14 Moon passes 01o28'.9 south of Saturn |
| 03h Moon is nearest to the Earth (358,048km,Dia.:33'22".5) | |||
| 20:41 New Moon | |||
| 27 | Mon | 0.6 | 00:51 Mon passes 04o29'.9 south of Mars |
| 11:50 Neptune is most at west(Mag:7.9,Dia.:2".2) | |||
| 28 | Tue | 1.6 | 11:27 Moon is closest to Asteroid Vesta (01o59'.9) |
| 29 | Wed | 2.6 | National Holiday in Japan (Midori no hi) |
| 30 | Thu | 3.6 | 22:32 Moon is at north most(Decl.:+18o47'.6) |
